There are a lot of options out there if you're looking for a quality Bluetooth speaker. Most of them have flashy names, like Beats or JAMBOX. But Cambridge Audio, a UK company that doesn't get a lot of press across the pond, has just introduced the Minx Go speaker. It has specifications that should be music to the ears of audiophiles, and a $150 price tag that fits neatly between decidedly low-fi solutions from Logitech and the pricier territory occupied by Bose and Jawbone.